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5.0 INSTALLATION
Once the Model 3088 is properly configured, it is ready to connect to the
twisted pair interface, to the serial port, and to the power source. This
section tells you how to make these connections.
5.1 CONNECTING THE TWISTED PAIR INTERFACE
The Model 3088 supports communication between two DTE devices
as follows:
Using 24 AWG (.5 mm) wire:
• up to 32,000 feet (9.7 km) at 192 kbps
• up to 18,500 feet (5.6 km) at 2.312 Mbps on
Using 26 AWG (.4 mm) wire:
• up to 23,000 feet (7 km) at 192 kbps
• up to 13,200 feet (4 km) at 2.312 Mbps on
Two things are essential:
1. These units work in pairs. Both units at the end of the twisted pair
DSL span must be set for the same DTE rate—one unit set as CO,
the other as CP.
2. To function properly, the Model 3088 needs one twisted pair of
metallic wire. This twisted pair must be unconditioned, dry, metallic
wire, between 19 (.9mm) and 26 AWG (.4mm) (the higher number
gauges will limit distance). Standard dial-up telephone circuits, or
leased circuits that run through signal equalization equipment, or
standard, flat modular telephone type cable, are not acceptable.